Figure 5. Wings of honey bees collected 7 Km far from the cement plant.

(A) Pollen grains and inorganic particles (brighter spots). (B) Arrow = iron oxide/hydroxide on the wing setae of 0.5 × 0.4 µm; arrowheads = baryte fragments. (C) Arrowheads = fly ashes. The dimensions of the two smaller ones are 1.3 × 0.6 µm and 0.6 × 0.4 µm, respectively. (D) p, phyllosilicate; arrowhead, portlandite.